– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Tue 17 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Tue 17 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Tue 17 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 2°C on Tue afternoon, min -5°C on Wed night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 7mm), mostly falling on Sun night. Freeze-thaw conditions (max 9°C on Sun morning, min -2°C on Fri night). Wind will be generally light. | ||||||||||||||||
Tue 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  |  | | |  | |  | | |  |  | |
rain shwrs | some clouds | light snow | snow shwrs | some clouds | cloudy | clear | clear | cloudy | cloudy | cloudy | cloudy | some clouds | cloudy | cloudy | light rain | light rain | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
0.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1.2 | 4 | |
max °C | 2 | -1 | 0 | -1 | -3 | 0 | 0 | -4 | 1 | 1 | 1 | 5 | 5 | 4 | 9 | 6 | 4 |
min °C | -1 | -2 | -1 | -3 | -5 | -2 | -4 | -5 | -1 | -1 | -2 | 4 | 2 | 2 | 7 | 5 | 4 |
-3 | -2 | -1 | -3 | -5 | -2 | -4 | -5 | -3 | -1 | -4 | 2 | -1 | -1 | 5 | 3 | 2 | |
800 | 200 | 400 | 450 | 0 | 250 | 450 | 0 | 350 | 550 | 150 | 1450 | 1450 | 1850 | 2000 | 1600 | 1800 | |
Cloud base (m) | 2200 | 550 | 550 | 550 | 700 | 650 | 750 | 600 | 700 | 850 | 1600 | 3200 | 3700 | 600 | 5050 | 2300 | 1700 |
 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — |
 | 5:31 | — | — | 5:34 | — | — | 5:35 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue afternoon, min -5°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 7mm), mostly falling on Sun night. Freeze-thaw conditions (max 9°C on Sun morning, min -2°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.